1. What is TDEE?

Total Daily Energy Expenditure (TDEE) is an estimate of how many calories you burn per day when exercise is taken into account. It's calculated by first estimating your Basal Metabolic Rate (BMR), then multiplying that value by an activity factor.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equation:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in centimeters
• \( age \) — Age in years
• \( s \) — +5 for males, -161 for females
• \( activity\ factor \) — Multiplier based on activity level

Explanation: The equation first calculates your BMR (calories burned at complete rest), then adjusts for your activity level to estimate total daily calorie expenditure.

3. Importance of TDEE Calculation

Details: Knowing your TDEE is essential for weight management - to lose weight you need to consume fewer calories than your TDEE, to gain weight you need to consume more.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, select your gender and activity level. Be honest about your activity level for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculator?
A: It provides a good estimate for most people, but individual variations in metabolism can cause actual TDEE to differ by ±10%.

Q2: Should I use TDEE for weight loss?
A: Yes, consuming 300-500 kcal less than your TDEE typically leads to steady weight loss of about 0.5-1kg per week.

Q3: How often should I recalculate my TDEE?
A: Recalculate whenever your weight changes significantly (5+ kg) or your activity level changes substantially.

Q4: Why different formulas for men and women?
A: Men typically have more muscle mass and less body fat than women at the same weight, affecting metabolic rate.

Q5: What if I'm very muscular or obese?
A: The equation may be less accurate for these populations as it doesn't account for body composition differences.